System keeps shutting off intermittently. Found that safety switch on condensation line is shutting the condenser off after a longer run period due to slow moving primary drain line. Checked drain line and it appears to be clear and draining correctly, but there is no secondary drain line coming off of coil. Secondary port on coil goes straight into the drain pan, and then triggers the safety switch. Went over findings and recommendations with homeowners. They do not want to invest more money into it as they hardly ever use it and summer is coming to an end. System is operational upon departure, but switch can possibly still be triggered every now and then.